Apparatus for attaching shoe soles to uppers



May 4, 1943- o. DA c. SCHMIDT Er A1. 2,440,788

APPARATUS FOR' ATTACHING SHOE SOLES TO UPPER-S Filed Feb. 27, 1946 4Sheets-Sheet 2 FIG-4 59 SOJ 57 6 6l 49 I i... l .1..

| Ti |l FIG-5 May 4, 1948. o. DA c. scHMlD-r Er AL. 2,440,788

APPARATUS FOR ATTACHING SHOE SOLES TO UPPERS Filed Feb. 27, 1946 4Sheets-Sheet C5 FIG.- 8

/ ,ma DMW ATTORNEYS May 4, 1948. 0.4DA c. SCHMIDT ET Al. 2,440,788

APPARATUS FOR ATTACHING SHOE SOLES TO UPPERS Filed Feb. 27, 1946 4Sheets-Sheet 4 INVENTORS OHo A Casin Schmid* n Sa'rnud A. Co'neHo.

Y I Doma/nf ATTORNEYS Patented May 4, 1948 UNITED STATES PATENT oFFlcEAPPARATUS FOR ATTACHING SHOE SOLES T UPPERS Otto da Costa Schmidt, EastCleveland, and Samuel A. Condella, Lyndhurst, Ohio Application February27, 1946, Serial No. .650,578

3 Claims. l The invention relates to novel and improved apparatus foradhesively attaching shoe soles to uppers, or for performing operationsof like character.

As is known to those skilled in the art, one

.upper in tight contact, preferably with suitable heat application,until the adhesive acquires a permanent set.

The specific type of adhesive, and the precise details of present orprior methods, will not be here described with detailed accuracy, sincesuch description is unnecessary for a comprehension of the presentinvention, which is mainly concerned with novel and improved apparatus,and with the novel steps of operation of the same.

An object of the present invention is to provide novel and improvedapparatus and means for rigidly supporting the shoe upper and last, incombination with means for applying pressure of hydrostatic type to thesole to thereby produce an evenly distributed and homogeneous pressureto the contacting portions of the sole and the upper.

Another object of the invention is to provide novel vand improved meanswhereby the operation mentioned in the last preceding paragraph isperformed entirely by fluid pressure from any suitable source, Withoutrecourse to laborious and time consuming operations, either manual ormechanical.

Another object of the invention is to provide apparatus of the naturedescribed which is simple, sturdy, easy to operate, and .to assemble anddisassemble, and otherwise to perform the various operations later to bedescribed.

Other objects and advantages will be apparent from a study of thefollowing specification in conjunction with .the attached drawings, in

which:

. Fig. 1 is a view in side elevation of an apparatus embodying thepresent invention; Fig. 2 is a top plan view of the apparatus shown inFig. 1; Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2; Fig.4 is a view in end elevation as seen from the left of Figs. 1 and 2;Fig. 5 is a sectional view taken on the line 5-5 of Fig. 1; Fig. 6 is asectional view taken on the line G-B of Fig. 5, and showing theoperating arm in side elevation; Fig. '7 is a fragmentary sectional viewsimilar in some respects to Fig. 6, but showing the several operatingparts in operating relationship to a shoe; Fig. 8 is a schematic viewshowing the routing of the fluid pressure system; Figs. 9 and 10 arefragmentary sectional views, similar in many respects to Fig. 7 butshowing adaptation of the apparatus to other types of shoe; Fig. 11 `isa. fragmentary perspective view of the front end of the apparatus.

Before the present invention here illustrated is described in detail, itis to be understood that the invention here involved is not limited tothe details of construction o-r thel specific arrangement of partsherein illustrated or described as the invention obviously may takevarious forms.

It also is to be understood that the phraseology or terminology hereinemployed is for the purpose of description and not of limination, thescope of the present invention being defined in the appended claims.Speaking first generally, the novel apparatus herein to be disclosedconsists of means for rigidly but adjustably holding the shoe parts in asuitably predetermined position, in operating conjunction with novelmeans for supplying the fluid pressure to maintain the sole and upper incontact While the adhesive is setting. The several parts will bedescribed in the order indicated. l

` Referring now to the drawings, theapparatus comprises a box-like tankl0 having a main chamber or Working chamber ii (Figs. 3 and 5) saidWorking chamber being laterally jacketed by twoV smaller fluidpreheating chambers i2 and .I3 from which the main chamber is separated,respectively, by walls `Ill and i5. The apparatus may be supported on aiioor or bench by legs i6. The open tops of jacket chambers l2 and I3are closed by a single U-shaped plate Il (Figs. 2 and 3) which may besecured in any removable fashion to a horseshoe ange I3 extending arounda substantial portion of .the periphery ofthe tank assembly The innerfront wall i9 (Figs. 5 and 6) of the main chamber is somewhat inclinedto the vertical to leave an inward recess in the front end, the verticalperiphery of which is adapted to receive a U-shaped cover plate 2t for apurpose to be immediately described.

The open upper surface of all three chambers, and the front end recessoutside Wall I9, are closed by an elastic or flexible diaphragm 25(Figs.` 2 and 4) of rubber or other suitable material which completelycovers the top of the chambers, extending outwardly and being secured atthe top between plate I'I and flange I8. The diaphragm extendscontinuously outwardly and downwardly over the front recess, beingperipherally securedat the front end under plate 29. It will be apparentthat when the diaphragm 25, and the securing plates l'i and 2! areiixedi in place, as by cap screwsor'fbolt-s 2t, the main chamber II andthe jackets I2l and` i3 are individually sealed against fluid leakage,the

diaphragm 25 over the main chamber 5I being' yieldable in eitherdirection responsiveztopresy sure diflerential between the interior andexterior surfaces thereof.

As will be apparent the main* chamber Iii, through diaphragm 25, servesto supply iiuid pressure to the shoe sole (Fig: 7)', and the'jacketchambers i2 and I3 serve to preheat the fluid to the proper operatingtemperature, after which the preheated fluid can-be transferred, bymeans now to. be described; to the main; chamber. at the proper time inthe operating. cycle;4

The huid; circulating system. will: be described with referenceto wateras the medium of pres.- sure, although-it willbe obvioustoanyonelskilled in* the art that oil; or other suitable liquid orgasecus medium, could be adaptedv tothe purpose.

Referring principally to the schematic showing inV Fig. 8, water sadmitted from themain, or other source of pressure; throughv conduit' 3Uto to-four-wayvalve V, andlthence, in the valve position shownin Fig. 8,through a` conduit 311 carryinga reducing valver R and'` a pressuregauge G to two branch conduits 321 and4 33- which. enter, respectively,the preheating chambersv I3-and1 lf2; where the water is-heatedby anelectrical heater H underthe control ofa thermostat T. This operation isconventional, andvthe apparatus is not shown indetail, thearrangementbeing eas,- ily understood and installed by a mechanic.

From the preheating chambers I-2 and` I3 the water, at a suitablepoint-inthe cycle isl admitted tothe main chamber' liI through conduits35, 35, and 35, which latterenters the bottom of chamber II (Fig. 3).Discharge from said main chamber'at an appropriatefpoint in the-cycle isprovided for through outlet conduits 31T; 38,V and 39 tothe valve Vl andthence-to a sewer orf other disposition through conduit 40 whenvalve VVvis appropriately operated.

The arrangement just described-is not critical, and changes of pipingmay be made tovsuitv particular requirements. For example, althoughtwopreheating chambers in a ja'cketed assembly, as here shown, formsabalanced arrangement-which maintains temperatur-e equilibrium with verysatisfactory thermal uniformity and economy, itis quite likely that asuccessful operation can be effected with onev preheating chamber, whichmay, if convenient or desirable, be physically removed to a locationremote from thechamber I-I=.

Apparatus for holding the-shoe upper and sole in adhesive contact willnow be described.

The shoe is retained in a xed position by an operating arm aportion ofwhich normallyoverhangs the top surface of'fthemainchamber. Said arm- 4iis L-shaped in contour, having a horizontal component 132'- whichover'hangs` as aforesaid and a vertical component 43 which, inconjunction with meansiixed'with respect tothe tank; fixes the arm inoperating positionA aft-er it hasbeenl placed in proper` operatingadjustment?- Adjacentits rear wallt-he# tank isprovided with a verticalirunway or channel which, intheem- 4 bodiment here shown, is definedbetween two upright posts i5 and 46, here shown as integral with therear end of the tank. The upper ends of the posts extend substantiallyabove the plane of the top clamping plate I7. The parallel inner opposedwall faces 48 and 49 of the posts are provided with a pair of matchedgrooves 50 and STI alignedfin` a verticalv planel and extending upwardlyfromA the lower ends of the posts to a level near, but short of, theupper ends of the posts. rPhe inner faces .d8 and 159 of the posts, thesaid grooves iand- 5I, and the rear wall surface 52 of the tank definethe channel, and form bearing surfaces for sliding travel of thevertical'portion i3-lof the arm duringy operation thereof, as willappear.

ArmF di isgenerally T-shaped in cross section, being provided with apair of laterally extending flanges 56. On the vertical component 43 ofthe arm the hat inner face 51 of the arm (Fig. 6) has a: slidingcontactzwith. a rear walli52 off the channel, and the sideedges ofthe-ii'angesi; have sliding contact". with theinner faces 48 and 4'9 ofposts d5 and 46. An enlarged boss. 59 at: the lower-end. or arm. portionlifhastwo opposedprojecting pinsir and4 61| which have a sliding.; keyengagement with grooves ande Eil: respectively;

It will now be apparent thatarml'lsis vertically freely movable manuallyto.- -ani upper limit wherein pinsv Sii,r andi e1. reach. theupperendvof grooves 59 and. 5I. Atl such. upper end. the lower inner corner$54 (Fig. 1;) of1 the verticall portion 43'? of the arm clears: theVupperend.- of the wall 52 (Fig. 5) so that atsuchupper limit'thearm maythen be pivotally swung outwardly: tothe broken line position of. Fig.1i, which is anrinactive or rest position. A: projecting finger: 66 onthe lower' end off thefarm. hasI then swung into sur-face abutmentwithan` undercut'inclinedportion' 6.7:' ofi wall. 512f (FigL 101,andvsaid abutting contact, in` conjunctionJ with the` position off pins53 and` 6l' in. their respective groovesl locks said arm in itsrearwardly inclined resti position. Dropping of 'the armi is furtherprevented-"in such rest position, sincecorner ihasfswunginwardly abovethe upper` corner off'wall', sol tliatf any downwardmovement of t earnris thusprevented asl long as the arm position 63T ist outwardlyinclined from the vertical; 'llheL function: and significance of thevarious arm positionslwillibecome apparent'v in connection withuthefdescriptionA of the operation'- of the device hereinbelcw.

The horizcntalportions 5ta ot lateralf'flange- 5,6 serve.' as keytracksfora; freelyslidable rider,vl 'I whichsis provided withfsuit'ablegroovesf.'IIJazWhicl1 Y ride on. said tracks. Beneath saidf rider i'sua`sadidle II which is adapted to seat on the] toe por:- tion of the-shoeupper (Figi 7). As rider 'I0 is moved` tothe left` (Figs. 1- and-'6D itis removable fromthe left end ofiY the-flange 53a; andity is ad?justabl'ef onsaid ilange for anyrsize off shoe merely by slidingmovement to the rightronle'ft.

The extreme-left'zend'ofl' the ti`p1end42af oIY arm portion liz, isslightlyI upwardlyfoset, and, proa vided? with opposed# key flanges- 55hwhichcooperate with grooves 'I2 in a slidable rider 73, which has-adependingI portion'liif,` the functionof which toabut the upperdsurface` ofi a' last` 8'2? (Figi. 7 whenz the-soiling operationis beingperformed. It: will be: apparentE that rider` 'i3 mayA beA withdrawn totheleft (Figs. 1 andl) and thus may bel completely removed from the armiItwll be further apparenti*` th'atrider"v 132 may.rbefa'djuste-dlaterally`T toV accommodate different? si'zes of shoes; Y

The operation of the device will nowbe described, with reference te thevarious drawings, and particularly to Figs. 1, 7, and 8. Starting at apoint in the cycle at which main chamber II contains sufcient heatedwater to maintain diaphragm 25 in approximately horizontal position, asindicated in Fig. '6, a shoe sole 80 is placed on the diaphragm, and ashoe upper 8|, encasing a last 82, is coated at suitable locations withan adhesive, and disposed on the sole at the proper position to bepermanently united thereto. During thisoperation the arm 4I is swung tothe rest position shown in broken line in Fig. 1. After the shoe andsole are disposed as aforesaid, the arm is swung to the operatingposition of Fig. '7, wherein the saddle 'II rests on the shoe toe, andthe rider 'I3 abuts the top of 'thelast For accurate registry theoperating position of rider I3 may be vertically adjustable by means ofa vertically threaded extension 83 and an adjusting nut B4, saidextension' passing upwardly through a vertical slot 85 in arm tip 42a.

VArm 4I being moved downwardly until operating contact is reached asaforesaid, pins @il and 6I are correspondingly moved downwardly from thetop of their groves 50 and 5I to the intermediate position indicated inFig. 7. Attention is here called to the fact that in" this or otherintermediate positions of pins in grooves, upward pressure against armportions l2 or 42a will have a tendency to attempt to swing the arm lilon the pivot pins B and E I, but such swinging movement of 'the arm isrendered impossible by reason of the fact that a portion or the face 5lof the vertical portion of the arm has planar contact with wall 52 ofthe operating channel, so that arm portion 43 can only depart from thevertical when the lower corner E5 passes above wall 52 as shown in Fig.1, in the broken line position. Further, arm 4I can be moved verticallyonly if the moving force is applied in such manner as to be effectivedirectly below orabove the pivot pins 6b and 6I. Any force applied outof vertical alignment with said pins is wasted in attempts to tilt thearm as aforesaid. It is accordingly apparent that as long as there issubstantial planar contact between the face 52 and wall 5l' upwardpressure beneath and against riders 'lil and 'I3 is resisted aseffectively as if arm tl were integrally fixed with respect to the tankassembly.

The shoe upper being thus braced against up` ward movement by arm 4I,valve V is turned to therposition shown in Fig. 8, permitting pressureViiuid from the'main 36 to proceed through conduits 3l, 32, and 33, tothe -preheating chambers I2 and i3, and thence through conduits 34, 35',and 36, to the operating chamber II. A ce1'- tain amount of freshlypreheated water, at a temperature for example between 75 F. and 90 F.,enters chamber II and' applies a hydrostatic force upwardly against soleBil through the medium of diaphragm 25. Being hydrostatic in nature, theforce is evenlyapplied to the whole further discharge tends to developan incipient vacuum within chamber l I, andthus terminates or greatlyreduces water discharge. The valve V is then turned to an intermediatefully closedposition, permitting no flow in either direction. When thepressure is released, the arm .4I is `raised manually toitstopmostposition and then swung to the rest position so as to permitsubstitution of another shoe. The shoe isv then removed.v and replacedby another, after which valve V is 'againiturned to the position of Fig.`8, such operation injecting a fractional increment of preheated waterfromchambers I2 and I3 to chamber II so as to apply pressure for thenext operation.

If desired the arm 4I `may be entirely removed from the apparatus byfirst sliding riders 1D and 'I3 to the left to remove them from theirrespec-` tive key flanges 56a and 56h. After such removal the arm may belowered Without tilting it, until pins 60 and 6I emerge from the bottomends of grooves Ell and 5I, after which the armA can be withdrawnrearwardly from its channel.`

The shoe illustrated in Fig. '7 is of relatively small size, and of thetype wherein the heel, sole and arch do not vary materially from acommon plane. Fig. 9 illustrates a convenient arrangement for a mansshoe 9D, representing the largest shoe to be accommodated by theapparatusl In such instance the heel portion of the shoe may extendwithin the top front clear-` ance space (Fig. 11) dened by the open.ends of the U-shaped horizontal cover plate I'I, and the U-shapedvertical clamping plate 20, the heel itself being above the inclinedinner front end wall Iii. The diaphragm 25 of course retains the upwardand outward thrust of the water.

Fig. 10 illustrates a convenient arrangement for a high heeled shoe. Theheel `@il may extend downwardly outside wall I9, and may even inolineinwardly under pressure, such inward inclination being unhindered byreason of the inward inclination of front wall I9, which expedientprevents breaking or distortion of the heel or sole,

As best seen in Fig. 11, the open front corner permitsV support of theheel end of large shoes, such support being taken care of by thediaphragm 25 alone.

It will be apparent to those skilled in the art that by `means oftheapparatus described; a proper thermal balance can be obtained' at anytemperature desired. The size of the preheating chambers relative to thesize of the main chamber can be controlled so that when thepredetermined increment of preheated water arrives in the main chamberit will restore the proper initial temperature for the start of thecementing operation. This can be additionally controlled by the capacityof heaters 1I (Fig. 8) and the thermostats T. Although the apparatuswill work lower surface of sole 8l), and may thus be maintained for anydesired period.

At the end of the required cementing period, valve Vis turned toestablish discharge communication between conduits 39 and Ail. Theweight of the shoe and last assembly is transmitted downwardly throughdiaphragm 25 and ejects a certain amount oi water through the dischargeconduits 31, 38, 38 and 40, until the diaphragm has collapsed to itslowermost position, after which satisfactorily as just described withoutautomatic or manual air venting, suitable air vents, check valves, etc.,may be provided if desired. The reducing valve T and the gauge G areprovided to properly accommodateand control the fluid pressure to thevalve suited `to the process.

One of the advantageous features of the appa.- ratus just described isthat the operating arm-is eiectively and automatically locked in anyoperating position throughout a vertical height coextensive with normalvariations in `shoe size and last heights. The arm willlXedly maintainits preset height relativeto the tank assembly and shoe.. Thisisachieved solely by properly deter-` minng-theicontroiiandiarr-zangement:orf:thnreiaf tiyelyrsiidingipartsoftheirrthechanneiwith respectif tmthepinotslineoithie armi; arml islnnkedtim pnsitinn so; astn'- bei im capable;y of.'V slippingf therefrominjuring; the amiaratuiforrtheaoperator;v` Unliirepreviousiavaablee.apparatus no; mechanical; pressureais. re:- quiredisucir assis'developedu` throughri levens; hand wheels; cams;- eta, since the' onlyrmanual opera. tion is'zthe lowering; ofz-thearms. from :itssrestposttiomtofitsno'peratingfpnsition. and?.t the.- ripeningl ofthepressureevalizea;

Wi'iilef wey havef` shdwm and` descrhed'oryf one fonoperatingxononershoait isohvimzst: that a twin assembly will ordinarily be made: up:to work-.simultaneuusify both membersi of: a; pair ofishoesi;'lihisicanrbesdbneziir any1-desiredimanner;l and: the fluidi pressurersystem; canA be; set: up imduplicate: under thea controi of: respectiaevalves;v so: that. cyclic:- operations: om indiV-iduai shoes may-fbechronolngicallyfstaggered fiir corcvement,- operationby 'ausingle'1operator ifdesred:

What: weclaim is:l

1a. Apparatus forradhesivelyvpermanentyfunitingfa shne soie1tofan;upper'comprising, ai. box'rlike i tan-.lnV havingi rigid?` sida. end;and.v bottom; walls; saidi tank having* two; longitudinali partitionstherewithint andextending:l from ai front: to:- a: rear wallfwherebystoidividefsaids tank into three' com:- partments' consistingof: atcentraliworliing; cham,- berandz two preheatingt chamberssspacedonemn each sideisofr said working chamber, meansl for conveying: fluid;ton said: preheating;` elzramblers; meansffor; heating; said; iiuid;ymeansa for` controlli.u inga theatemperature of; said: iiuidg. and meansfor transferring; said: iiuid" underA pressure tion said working;chamber,M toprwall 'meansf foralli three saint chambera, theytnp: wall:for saidi working chamber'consisting ofi an imperviousfdiaphragm of;flexible: material yieldablyfresponsive-to:l pressure? differentialswithin andi without'said; work,- ing chamben. said-f` diaphragm,` beingfadapt-edf to support thereon; anl aiihesinelp joined: shoe: sole andiupper; ,anoperatinga alnr having; aahorizontai portion adapted tooverhang said upper wa11;.and a. verticali portion: extending;-partiallyvv downward hehimir; said tank: and, having; a'diustably,Y slidingicontactf withfthe; rear-wall; of said\.tank, said horizontal portionof said arm carrying; depend.

ingv means for maintaining; saidil shoe upper and sole: im operativesycontacta with: saith diaphragm;and'means-forapplyingrhydrnstatiufpressnrelirom saidi working: cham-ben*through: said; diaphragm t-oasaid shoezsole:

Apparatus for; adhesively:pennanientiy.s unit;- inga shoe sole 'to-4 anzupper comprising? arbore-like' tanl having: rigidE side, end; and?bottom walls;

said tanliJ having` two longitudinali partitions therewithinandextending from ai fi'ontztoiairear wail whereby. tos divide said tankintthreecom part/'ments:consistingL off a?q centrals working-'chamberandi two:preheatingJ chambers:k spaced`Y one?` oni eacl'rside. of saidwork-ing chamberg! means: for conveying iiuidl tofsaidi preheatngchambers; meansffon heating said? uid, means `forI control` ling-the:temperature: ofi saidiiuid;V andi meansif-on transferringf said fluidiunderpressureY `toi said workingl chamber; top:` wall# means: fors al1three said'E chambers;4 the topf wall? for saidi working chamberuconsistin'gf oft5 ani impervious; diapl'ira'gml off' flexible material?yieldably.; responsiiree tot pres-:- sure differentials within. andiwithout. saidzwrleing chamber, said diaphragm being. adaptedi tnsupport"V thereon: an 1 adhesiiuilyi joinedi shoe: suie andi` upper; an.operating' amm; having: as; horizon? 8 tan portioni adapted to".overhangf upperwall, andlavverticaiportion extending partially downward:behind; said tanklV a'ndf` havingl'adlusta'bly sliding-contant wiim: therearwafll of saidtank;

sardi lioriacfntaiipnrti'ony off amr carryin'g1` deil pending?. meansfor" maintaining; said shoe upper andi soie im operative contact with:said! diaphragnn andi` means for applyingt hydrostatic pressurefromsaidv working: chamber through saididi'aphragm to: saidsh'o'e-v sole;-thefrontz end waiiiof saidki chamber having: an` opening: therein, andsaidi diaphragm having'- azforward andidown'- warda extension. extendingover lsaid-iV openingf to cover; and seali saidi opening; wherebythefheel portion of4 a. shoek supported: on: said diaphragm aslaforesaid may.vextend-7 forwardly andi down,- wardiy` beyond the'.front'Y wall` ofn thev tank; while permitting: said; downwardextensiontoiresilently accommodate itselfl theretof.

3.1 Apparatusrvf'or.A adhesively permanentlyi unit"- ingiaashoe,so'l'e'A to; upper comprising.' ab'ox-like tank: han/ing rigidi side,endg. andl bottom` walls; said tank having two longitudinal partitionstherewithin.` and-'extending from. a. front yto a lrear wall wherebyrtir-divide said tank intolthreercom partmenteconsistingl ofa central'work-ing charm ber` andtwoepreheating." chambersl spacedv4 one` on each=side.- of said work-ing` chamber, means for conveying fluidl to: saidpreheating chambers, means for heating saidi fluid, means-'foricontrolelingk theitemperatur-e ofi said.1 fluidi and'. means'ifor transferring?said! uidbunder` pressure to said working chamber;` topwall' means for=allfY three saidf chambers, the top wall for said working chamberconsisting of. an impervious: diaphragm @ff iiexiblefrmaterialfyieldingl'y' responsive to' pres-- sure diierent'ials-.wit'hin andwithout said: work'- ing chamberg, said. diaphragm being adapted? toisupport: thereon an; adh'esivelyl joinedl shoesole and upper.,V an-loper-ati'ng.; arm. having a 4horizontal portion; adaptedtooverhangfsai'df upper Wall; and at verticali portion; extendingpartalllyl down!- wai'd behind? said: t'ank; said l'iorizonta'l;yportion o'saidarm carrying depending@ means=for maimtaining:y sai'dshoe' upper: and: solei. in. operative contant withxsaid diaphragm',Aandmeans: for apipiying: hydrostatic; pressure; fiumi said. workingchamber through.. saidf diaphragm: to: said shoe sole; thefifont'lendiwa'llloi saidchamber having an:- openingx therein, and.ssaid," di'aphragmahaving a; forwardi anddownward, extension extendingover said opening to cnver: andzseallsaidopening, whereby thea heel;portion; ofll a. shoei supported on said diaphragm` as aforesaidlmayextend for:- ward'ly.' andi downwardly beyondqthe'; fronti wall ofitheitanh; while. permitting sad downward` ex;- t'ensi'on to resiliently'accommodate vitself thereto;

OTTO DA` COSTA SCHMIDT. SAMUEL' CONDELLA.

REFERENCES CITED 'The4 foiibwing references are of` record" in the ieeoft-lfiis1 patient:

Number Name Y Date.

21058,;446' Haseli'er. Oct. 27., 1936 FGREGN PATENTS.

Nunihen Country; Date` 4505926 GreatBritain .--am Julyy 27; r,1936333}0.32. Germany July 18, 1936

